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Dear BatchPatch-Team,
I have several files that are encrypted with the same user account and password.
Since two days one of those files cannot be decrypted. The other files work fine.Is there any way to restore or decrypt the file?
Version 2025.9.8.17.26
To be clear, are you saying that you have password-encrypted grids or are they key-encrypted? And all of a sudden one of them cannot be decrypted but the others still can be decrypted even though they are all encrypted with the same password/key? What is the *exact* message that appears in BatchPatch when you try to load the grid file?
Things to consider:
1. Key-based encryption relies on the Windows user logon account that launched the batchpatch.exe. If the password to the user account was forcibly reset (forcible reset includes any method that is *not* CTRL-ALT-DELETE, such as resetting in Active Directory directly or resetting in compmgmt.msc), the encryption keys will be reset, and grids encrypted prior to the forced password reset will no longer be able to be decrypted.
2. Password-based encryption requires the correct password to be input in order for the grid to be decrypted.
If a key-based encrypted grid fails to decrypt, it could mean the following:
A. The grid was loaded into BatchPatch but under a different user account from where it was previously saved/encrypted.
B. The password of the user account that launched BatchPatch had been forcibly reset (as described above).
C. The .bps grid file on disk was modified (such as with a text editor or script etc) such that BatchPatch cannot successfully decrypt it anymore.
D. The .bps grid file on disk became corrupted for some reason (we have not ever had a report of this occurring, so it’s unlikely though technically possible).
If you aren’t able to determine what happened and aren’t able to get things resolved, I’d want to see a screenshot of the header of the file in a text editor, but please contact us directly at BatchPatch contact to share that with us. If the file has been modified or corrupted, there is nothing that we can do. If the user account password was been forcibly reset but you didn’t make a backup of the keys prior to that, there is nothing that we can do. If we can examine the file header, we might be able to determine if the file is corrupted or at least which encryption mode that was used, which might help you retrace your steps to determine exactly what occurred.
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